Hi there

Just thought it best to introduce myself here. I'm a physicist working in the area of quantum mechanics (non-relativistic) and quantum information theory. I've done a bit of work in quantum key distribution (QKD).

I know I'm not allowed to ask questions here - but if any kind soul can tell me what the pre-fixes I and B (etc) on threads mean I'd be very grateful - I couldn't find out what these mean from the FAQs or help. I've probably looked in the wrong place :-)

Just thought it best to introduce myself here. I'm a physicist working in the area of quantum mechanics (non-relativistic) and quantum information theory. I've done a bit of work in quantum key distribution (QKD).

I know I'm not allowed to ask questions here - but if any kind soul can tell me what the pre-fixes I and B (etc) on threads mean I'd be very grateful - I couldn't find out what these mean from the FAQs or help. I've probably looked in the wrong place :-)

Welcome to PF, Simon.

They indicate level of difficulty. They stand for Basic, Intermediate, and Advanced. If you try to create a new thread in certain areas, you can assign them when you create the thread.